Pachybrachis pawnee
This record describes Pachybrachis pawnee (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.
Identification and Appearance

Elytra yellow, with suture or sutural bead and two discal vittae on each black or brownish. Front claws of male distinctly enlarged; lustre dull, outer elytral vitta confined to the 7th and 8th interspaces. Type Locality: Onaga, Kansas [Pottawatomie County]
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Chrysomelidae (Leaf Beetles)
- Subfamily
- Cryptocephalinae
- Tribe
- Cryptocephalini
- Genus
- Pachybrachis (Scriptured Leaf Beetles)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
SD-TX, MO
Seasonal Activity
May-Jun
Diet and Behavior
Diet: coll'ed from dock - Rumex (Polygonaceae) ( 3 )
Additional species information
Species notes from the sources
Etymology: Pachybrachis pawnee Fall, 1915
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Pachybrachis pawnee. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Pachybrachis pawnee (5)
Photo credits: Contributed by Mike Quinn
Frequently Asked Questions About Pachybrachis pawnee
What is Pachybrachis pawnee?
Pachybrachis pawnee is a species in the family Chrysomelidae, within the order Coleoptera.
How big is Pachybrachis pawnee?
3-3.5 mm
How do you identify Pachybrachis pawnee?
Elytra yellow, with suture or sutural bead and two discal vittae on each black or brownish. Front claws of male distinctly enlarged; lustre dull, outer elytral vitta confined to the 7th and 8th interspaces.
Where is Pachybrachis pawnee found?
Range: SD-TX, MO
What does Pachybrachis pawnee eat?
The diet of the Pachybrachis pawnee includes coll'ed from dock - Rumex (Polygonaceae) ( 3 ).
When is Pachybrachis pawnee active?
Pachybrachis pawnee: seasonal activity - May-Jun.
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